// 05-export-object.js
const circle = {
    diameter: function(radius) {
      return 2 * radius;
    },
    area: function(radius) {
      return Math.PI * radius * radius;
    },
    circumference: function(radius) {
      return 2 * Math.PI * radius;
    }
};

module.exports = circle;

console.log(module);
  